홈 전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)
홈
전원 관리
AC/DC 및 DC/DC 컨트롤러(외장 FET)

UCC28720

활성

양극 전원 장치를 위한 1차 측 조정을 지원하는 정전압, 정전류 컨트롤러

지금 주문
데이터 시트

UCC28720

활성
데이터 시트 지금 주문

제품 상세 정보

Vin (min) (V) 9 Vin (max) (V) 450 Iout (max) (A) 3 Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 20 Features CC/CV output regulation, Current limiting, DCM, Green mode, High voltage startup, High-voltage startup, Input line monitor, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, PSR, Primary-side regulated, Quasi-Resonant, Soft start Iq (typ) (µA) 2000 Duty cycle (max) (%) 99
Vin (min) (V) 9 Vin (max) (V) 450 Iout (max) (A) 3 Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 20 Features CC/CV output regulation, Current limiting, DCM, Green mode, High voltage startup, High-voltage startup, Input line monitor, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, PSR, Primary-side regulated, Quasi-Resonant, Soft start Iq (typ) (µA) 2000 Duty cycle (max) (%) 99
SOIC (D) 7 29.4 mm² 4.9 x 6
  • < 10-mW No-Load Power
  • Primary-Side Regulation (PSR) Eliminates Opto-
    Coupler
  • ±5% Voltage and Current Regulation Across Line
    and Load
  • 700-V Start-Up Switch
  • 80-kHz Maximum Switching Frequency Enables
    High-Power Density Charger Designs
  • Quasi-Resonant Valley-Switching Operation for
    Highest Overall Efficiency
  • Wide VDD Range Allows Small Bias Capacitor
  • Dynamic BJT Drive
  • Overvoltage, Low-Line, and Overcurrent
    Protection Functions
  • Programmable Cable Compensation
  • SOIC-7 Package
  • < 10-mW No-Load Power
  • Primary-Side Regulation (PSR) Eliminates Opto-
    Coupler
  • ±5% Voltage and Current Regulation Across Line
    and Load
  • 700-V Start-Up Switch
  • 80-kHz Maximum Switching Frequency Enables
    High-Power Density Charger Designs
  • Quasi-Resonant Valley-Switching Operation for
    Highest Overall Efficiency
  • Wide VDD Range Allows Small Bias Capacitor
  • Dynamic BJT Drive
  • Overvoltage, Low-Line, and Overcurrent
    Protection Functions
  • Programmable Cable Compensation
  • SOIC-7 Package

The UCC28720 flyback power supply controller provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

An internal 700-V start-up switch, dynamically-controlled operating states and a tailored modulation profile support ultra-low standby power without sacrificing start-up time or output transient response.

Control algorithms in the UCC28720 allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a bipolar transistor power switch. Discontinuous conduction mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The controller has a maximum switching frequency of 80 kHz and always maintains control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28720 allows compensation for voltage drop in the cable to be programmed with an external resistor.

The UCC28720 flyback power supply controller provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

An internal 700-V start-up switch, dynamically-controlled operating states and a tailored modulation profile support ultra-low standby power without sacrificing start-up time or output transient response.

Control algorithms in the UCC28720 allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a bipolar transistor power switch. Discontinuous conduction mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The controller has a maximum switching frequency of 80 kHz and always maintains control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28720 allows compensation for voltage drop in the cable to be programmed with an external resistor.
filter 기타 AC/DC 및 DC/DC 컨트롤러(외장 FET) 찾기
다운로드 스크립트와 함께 비디오 보기 동영상

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
11개 모두 보기
유형 직함 날짜
* Data sheet UCC28720 Constant-Voltage, Constant-Current Controller With Primary-Side Regulation datasheet (Rev. B) PDF | HTML 2015/09/30
Application note Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips PDF | HTML 2021/08/31
Application note Minimize Standby Consumption for UCC287XX Family 2019/08/01
Application note Maximum Output Power and Thermal Considerations for UCC28720 and UCC28722 2017/12/06
Application note Troubleshooting TI PSR controllers 2016/10/03
Technical article Slim down your flyback; lose that excess snubber PDF | HTML 2016/02/15
White paper Control Challenges for Low Power AC/DC Converters 2015/10/02
White paper Control Challenges for Low Power AC/DC Converters (PPT) 2015/10/02
Technical article Designing multiple output converters with primary side sensing PDF | HTML 2015/08/04
Application note 5-W USB Flyback Design Example Using the UCC28722 2014/01/08
EVM User's guide Using the UCC28720EVM-212 (Rev. A) 2013/09/20

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

UCC28720EVM-212 — USB 오프라인 어댑터를 위한 UCC28720EVM-212 5W 평가 모듈

The UCC28720EVM-212 is a 5W evaluation module for evaluating an off line adapter for USB applications. It is intended for evaluation purposes and is not intended to be an end product. The UCC28720EVM-212 converters 100V to 240V RMS input voltage down to 5V DC, with a 1A current limit for USB (...)
사용 설명서: PDF
TI.com에서 구매 불가
계산 툴

SLUC528 — UCC28722 MathCad Design Tool

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
AC/DC 및 DC/DC 컨트롤러(외장 FET)
UCC28720 — 양극 전원 장치를 위한 1차 측 조정을 지원하는 정전압, 정전류 컨트롤러 UCC28722 — 양극 전력 디바이스를 위해 1차측 조정을 사용하는 저비용의 CVCC 플라이백 컨트롤러
다운로드
계산 툴

SLUC529 — UCC28722 Excel Design Tool

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
AC/DC 및 DC/DC 컨트롤러(외장 FET)
UCC28720 — 양극 전원 장치를 위한 1차 측 조정을 지원하는 정전압, 정전류 컨트롤러 UCC28722 — 양극 전력 디바이스를 위해 1차측 조정을 사용하는 저비용의 CVCC 플라이백 컨트롤러
다운로드
레퍼런스 디자인

PMP9622 — 350W 정전압 - 정전류(CVCC) 위상 전환 풀 브리지 레퍼런스 디자인

This reference design uses the UCC3895 Phase-Shifted Full Bridge controller to implement a high efficiency, 120VAC input to 44Vdc up to 8A output.  The power supply is set up to be  constant voltage-constant current.  The voltage and current are set by fixed resistor values and could (...)
Test report: PDF
회로도: PDF
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
SOIC (D) 7 Ultra Librarian
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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포럼 주제 모두 보기(영문)

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